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Observation: Turnagain

Location: Magnum

Date:
Observer:
Route & General Observations

Standard up-route into PMS Bowl from the Magnum/Corn Biscuit parking lot.

Red Flags
Red flags are simple visual clues that are a sign of potential avalanche danger. Please record any sign of red flags below.
Obvious signs of instability
Recent Avalanches?No
Collapsing (Whumphing)?Yes
Cracking (Shooting cracks)?No
Observer Comments

One large collapse triggered while skinning on a low angle Northerly slope at 2,000'. Pit profile below of this area. Collapse was in facets under a 35cm/14" slab from St. Patty's day storm. Another party noted collapsing lower the NW ridgeline of Magnum.

Weather & Snow Characteristics
Please provide details to help us determine the weather and snowpack during the time this observation took place.
Weather

Overcast skies (gray bird) with very warm temperatures ~34-35F.
Winds were calm and no precipitation.

Snow surface

Damp settled powder was seen on all aspects. Southerly slopes are very sun affected in general and today warmed up enough the snow was gloppy before turning crusty by late afternoon. Northerlies were becoming damp as well with greenhousing occurring due to the thin cloud cover letting the sun in but also trapping the longwave radiation.

Below 2,000' the snow was supportable crust in the morning and saturated by late in the day. At 1,000' there is little to no snow - again...

Snowpack

We dug in two locations today.

Pit 1- 2,000' on North facing Corn Biscuit - see photo.
ECTP 13 and 15 SC down 35cm in faceted snow

Pit 2- 3,200' on a Southwest aspect of Magnum - see video
ECTP 20 and 21 SC down 45cm in facets under a thin wind crust which was bonded to the 1 finger slab

Photos & Video
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